Particle A of mass moving with velocity collides with another particle B of mass…

PHYSICS · Single correct · CBSE · Physics · Work, Energy and Power · Work, Energy and Power

Problem

Particle A of mass m1m_1 moving with velocity (3i^+j^) ms−1(\sqrt{3}\hat{i} + \hat{j}) \text{ ms}^{-1} collides with another particle B of mass m2m_2 which is at rest initially. Let V⃗1\vec{V}_1 and V⃗2\vec{V}_2 be the velocities of particles A and B after collision respectively. If m1=2m2m_1 = 2m_2 and after collision V⃗1=(i^+3j^) ms−1\vec{V}_1 = (\hat{i} + \sqrt{3}\hat{j}) \text{ ms}^{-1}, the angle between V⃗1\vec{V}_1 and V⃗2\vec{V}_2 is: (1) 15∘15^\circ (2) 60∘60^\circ (3) −45∘-45^\circ (4) 105∘105^\circ

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